Driving attachment for sewing-machines



(No Model.)

W. R. SOMERS.

DRIVING ATTACHMENT FOR SEWING MAGHNES. No. 273,627. Patented Ma.1.6, 1883.v

' a citizen ofthe United States,

-NITED STATES PATENT OFFICE.

WILLIAM R. SOMERS, OF BRIDGEPORT, (l

ONNEOTICUT.

SPECIFICATON forming part of Letters Patent No. 273,627, dated March 6, 1883. Application tiled January 20, 1883. (No model.)

To all whom it may concern.'

Beit known that I, WILLIAM R. SoMnRs, and a resident of Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Driving At. tachments for Sewing-Machines, ot' which the following is a specification.

My invention is a device constructed as fully described hereinafter, whereby the operator of a sewing-machine may quickly and easily put the same into and out oli' connection with a main power driving-shaft, the same being specially adapted for use in factories Where large num bers ot' machines are driven from the same shaft.

ln the drawings, Figure l is an elevation showing the main driving-shalt, a sewingmachine, and intermediate starting and stopping device. Fig. 2 is a side elevation of said device.

A is the main driving-shaft of a number of machines, provided with a sexies of pulleys, a, one arranged opposite each machine C. Between each pulley and the opposite machine are standards b, between which is hung a frame, D, carrying a shaft, e, upon which are arranged two grooved pulleys, tlf, the former receiving the belt g from the pulley a, and thelatter the belt /,\vhich extends to the driving-wheel Z of the sewingmachine.

With the frame D are combined devices, under the ready control ofthe operator of a sewing-machine, whereby the said frame may be moved or vibrated so as to tighten or slaclen the belt g, the slackening of the belt causing it to pass loosely around the pulley d, thereby arresting the motion of the machine, While the tightening ofthe belt insures the rotation ot'both pulleys dfand the transmission of motion to the machine.

Different devices may be used for enabling the operator to move the frame D. For instance, it may be connected by-a rod,j, to an arm, k, of a double treadle, I, hung adjacent to the machine, so that by rocking it in one direction or the other by the operators foot the frame D will be moved to or from the pulley a. Instead ot' connecting the rod j directly to the frame D, however, l prefer to attach it to a slide, J, beneath the arm m, ex-

tending from the frame D, and having an inclined or Wedge-shaped projection, n, and lip s. When the treadle is tilted to throw the carriage in the direction of the arrow, the wedge, coming beneath the arm m, the frame D away from the pulley a and tighten the belt. An opposite movement will bring the lip s against the arm m, swing the frame D toward the pulley a, and loosen the belt. To prevent the momentum of the pulleys from continuing the motion of the machine at'ter the belt is slackened, I bring one of the pulleys against a brake-shoe, t, supported by a standard, M.

It will be apparent that by the arrangement described the machine may be thrown into and out of operation and retained in either condition without the operator being obliged to maintain a constant pressure upon the treadle or other moving device.

I claim` 1. The combination, with a driving-shaft and its pulley and with a sewing-machine, ot' a movable frame, D, carrying pulleys df,with belts passing to the driving and machine pulleys, and appliances whereby the frame may be moved to and from the driving-pulley, substantially as set forth.

2. The combination, with the movable frame carrying pulleys with belts passing to the driving and machine pulleys, of a standard, M, carrying a shoe, t, substantially as set forth.

3. The combination of the movable frame, arranged between the driving-pulley and the machine, and treadle I, connected to operate the frame, substantially as specitied.

4. The pivoted frame D, carrying pulleys d andf, and provided with an arm, m, in combination with the slide J, having a wedge, n, and lip s, and a device for moving,r the slide from a position adjacent to the machine, substanti-ally as set forth.

1n testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM R. SOMERS. Witnesses.:

JAMES ALFoRD HOUSE, CHARLES H. DIMoND.

will swing 

